# Effects of Sulfur Contamination on the Oxidation Resistance of Recycled Ni-Base Single-Crystal Superalloy PWA1484™

https://mdr.nims.go.jp/datasets/6d5d3e3d-3919-44c6-be55-005ee62fd565

## File

- [revised manuscript.docx](https://mdr.nims.go.jp/filesets/304a7fcd-0e78-4908-8436-0f054fd5d96a/download) ([Detail](https://mdr.nims.go.jp/filesets/304a7fcd-0e78-4908-8436-0f054fd5d96a.md))

## Id

6d5d3e3d-3919-44c6-be55-005ee62fd565

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-03-30T23:29:16.945422Z

## Updated at

2026-03-30T23:51:25.957327Z

## Published at

2026-03-31T03:24:52.789324Z

## Doi

https://doi.org/10.48505/nims.6236

## First published url

https://doi.org/10.1007/s11085-026-10383-5

## Date published

2026-03-27

## Recorded date published

2026-4

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Effects of Sulfur Contamination on the Oxidation Resistance of Recycled Ni-Base
    Single-Crystal Superalloy PWA1484™
  title_type: original
  lang: en

## Description

- description: Cyclic oxidation behaviors of recycled Ni-base single-crystal superalloy
    PWA1484™ at 800 and 1100 °C were investigated to understand the effects of impurity
    S from scrapped turbine blades on the oxidation resistance of recycled blades.
    Two series of PWA1484™ alloy were prepared; alloys directly recycled from scrapped
    blades using either a conventional Al2O3 crucible or a CaO crucible for melting,
    and model alloys cast with intentionally added S varying between 6 and 88 ppm.
    PWA1484™ recycled through CaO crucibles showed improved cyclic and isothermal
    oxidation resistance at 1100 °C, compared with that recycled through an Al2O3
    crucible, since calcium–aluminate slags can capture impurity S as CaS during melting.
    However, PWA1484™ recycled by Al2O3 crucible melting showed significant decrease
    in oxidation resistance at 800 °C. Microstructural and alloy chemistry analyses
    on two series of alloys suggested that increase in impurity S contents had accelerated
    the oxidation spallation rates at 1100 °C, while negative impacts such as degradation
    of oxide layer adhesiveness were limited for cyclic oxidation at 800 °C. These
    were due to differences in S distribution after oxidation; clear S segregation
    at the metal/oxide interface was detected at 1100 °C, while no segregation at
    the interface was observed at 800 °C. Furthermore, the slight changes in main
    alloying compositions through recycling process also affected the oxidation rate
    at both temperatures. Our findings show that not only the control of impurity
    S, but minor compositions adjustment of Al and Cr, which forms the protective
    oxide layers, are also important for recycling of scrapped blades.
  description_type: abstract
  lang: und

## Creator

- name: Chihiro Tabata
  role: author
  orcid: https://orcid.org/0000-0001-6597-4998
  organization: National Institute for Materials Science
- name: Satoshi Utada
  role: author
  orcid: https://orcid.org/0000-0001-6783-9968
  organization: National Institute for Materials Science
- name: Toshio Osada
  role: author
  orcid: https://orcid.org/0000-0003-1539-9264
  organization: National Institute for Materials Science
- name: Kyoko Kawagishi
  role: author
  orcid: https://orcid.org/0000-0001-7652-9232
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Oxidation resistance
  schema: not_defined
- subject: Nickel-base superalloy
  schema: not_defined
- subject: Direct recycling
  schema: not_defined
- subject: Sulfur
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/
  date_licensed: 2026-03-27

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: High Temperature Corrosion of Materials
  issn: '27318397'
  volume: '103'
  issue: '2'

## Conference



## Related item



## Funding

- funder_name: Japan Science and Technology Agency

## Instrument



## Instrument operator



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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



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## Fileset

- id: 304a7fcd-0e78-4908-8436-0f054fd5d96a
  filename: revised manuscript.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 11652456
  md5: 6a6f6bee0b86afee46becd380642b0a6

## Thumbnail

fileset_id: 304a7fcd-0e78-4908-8436-0f054fd5d96a
filename: revised manuscript.docx